package Demo;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Demo09 {
    public static void main(String[] args) throws FileNotFoundException {
       try ( OutputStream is = new FileOutputStream("./文本.txt",true)) {
           is.write(97);
           is.write(98);
           is.write(99);
       } catch (IOException e) {
           e.printStackTrace();
       }



    }
}
